FREE SAMPLE — LangChain RAG Document Q&A Pack (DIG-AGT-006)
Full product: https://marketplaceplanet.com/ (search DIG-AGT-006)

This sample is genuinely runnable: it includes the ask.py CLI, the local
hashing embedder, loaders, chunker, vector store and chain, plus ONE
sample document (photosynthesis.txt).

Try it:
  pip install numpy
  python ask.py index --docs sample_docs --store index.npz
  python ask.py ask --store index.npz "How do plants make food using sunlight?"

The full pack adds: all 3 sample docs on different topics, the LangChain
adapter, the smoke test suite, PDF-loading notes, OpenAI embedder/LLM
walkthrough, and the full README.
